<nav class="navbar Pri-Nav">
  <div class="container-fluid">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">AngularJS响应式</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button><!-- 响应式头 -->
      <a class="navbar-brand" href="#">AngularJS</a>
    </div>

    <!-- 导航链接、表单和其他内容切换 -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
    	<!-- 导航 -->
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">首 页 <span class="sr-only">(current)</span></a></li>
        <li><a href="#">首 页</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">首 页 <span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="#">首 页</a></li>
            <li><a href="#">首 页</a></li>
            <li><a href="#">Something else here</a></li>
            <li role="separator" class="divider"></li>
            <li><a href="#">首 页</a></li>
            <li role="separator" class="divider"></li>
            <li><a href="#">首 页</a></li>
          </ul>
        </li>
      </ul>
      <!-- 搜索 -->
      <form class="navbar-form navbar-left" role="search">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="Search">
        </div>
        <button type="submit" class="btn btn-default">Submit</button>
      </form>
      <!-- 右边导航或者个人信息登录之类的 -->
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">昵 称</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">个人中心 <span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="#">首 页</a></li>
            <li><a href="#">首 页</a></li>            
          </ul>
          <li class=""><a><i class="glyphicon glyphicon-cog"></i></a></li>
        </li>

      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>